
<%@ page language="java" import="java.sql.*,javax.naming.*,javax.sql.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'dbtest.jsp' starting page</title>
    
    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">
    
    <!--
    <link rel="stylesheet" type="text/css" href="styles.css">
    -->
  </head>
  
  <body>
<%
   Context ctx=null;
   Connection cnn=null;
   Statement stmt=null;
   ResultSet rs=null;
   try
   {
    ctx=new InitialContext();
    if(ctx==null) throw new Exception("没有匹配的环境");
    DataSource ds=(DataSource)ctx.lookup("java:comp/env/jdbc/code");
    if(ds==null) throw new Exception("没有匹配数据库");    
    cnn=ds.getConnection();
    stmt=cnn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_READ_ONLY); 
	String sql="select * from H_USER"; 
	rs=stmt.executeQuery(sql);
	out.println("数据库连接正常！");
	}catch(Exception ee){
	     out.println("connect db error:"+ee.getMessage());
	}
	finally
    {
	    if(rs!=null)rs.close();
	    if(stmt!=null)stmt.close();
	    if(cnn!=null)cnn.close();
	    if(ctx!=null)ctx.close();
    } 
%>

  </body>
</html>
